AutumnAutumn

4K wallpapers that shift with the sun.

Autumn aligns your Android display with your local solar cycle—transitioning quietly from daylight clarity to pure OLED black at night.

Explore Time-Shift

Sunset 18:46 · Dusk phase active

Amber Dunes4K P3

Time-Shift Solar Schedule

Select a solar phase to inspect the display calibration.

Amber Dunes

17:30 – 21:00

Reduced blue-spectrum palette that softens display brightness as ambient light fades in the evening.

Display Calibration
3200K · Low-Blue Spectrum
Transition Trigger
Astronomical sunset alarm (< 20ms)
Background CPU
0% idle (Native Android AlarmManager)

Engineered for Android displays.

Built directly on native system APIs so your screen stays sharp, responsive, and effortless on battery life.

True AMOLED black.

Hand-calibrated #000000 black values switch off individual OLED pixels completely, delivering infinite contrast while reducing display power consumption.

Zero background drain.

Unlike live wallpaper engines that continuously consume GPU cycles, Autumn schedules native Android wake alarms that complete in under 20 milliseconds.

Native 4K P3 resolution.

Every artwork is mastered at full 2160×3840 Ultra-HD resolution with wide-gamut P3 color tuning and applied directly via Android WallpaperManager.

Private by design.

Sunrise and sunset times are calculated locally on your device using astronomical formulas. No tracking SDKs, no location servers, and no ads.

Simple, transparent access.

Start with the free daily collection, or unlock automated solar scheduling with Autumn Pro.

Autumn Free

$0Forever

Curated 4K wallpaper discovery with manual solar preview and daily updates.

  • Standard 4K P3 wallpaper library
  • Manual Time-Shift solar preview
  • Daily featured wallpaper curation
  • One-tap Home and Lock screen application

Autumn Pro

$14.99per year, or $2.99/week

Full automated Time-Shift solar scheduling and the complete AMOLED Noir archive.

  • Automated Time-Shift solar scheduling
  • Complete 99% pure AMOLED Noir archive
  • Uncompressed 4K Ultra-HD downloads
  • Lock screen solar and countdown widgets

Questions and answers.

Autumn calculates local sunrise, solar noon, sunset, and midnight on-device and registers exact wake alarms with Android OS. Instead of running a continuous background service, it swaps static 4K bitmaps in under 20 milliseconds.

Give your display a calmer rhythm.

Experience 4K wallpapers that move with the sun. Available for Android 11 and later.